git: kernel - Cut buffer cache related pmap invalidations in half
Matthew Dillon
dillon at crater.dragonflybsd.org
Sun Jul 24 22:01:18 PDT 2016
commit 2d1b280fd7290751e4da3171a396ae301829790f
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date: Sun Jul 24 21:52:26 2016 -0700
kernel - Cut buffer cache related pmap invalidations in half
* Do not bother to invalidate the TLB when tearing down a buffer
cache buffer. On the flip side, always invalidate the TLB
(the page range in question) when entering pages into a buffer
cache buffer. Only applicable to normal VMIO buffers.
* Significantly improves buffer cache / filesystem performance with
no real risk.
* Significantly improves performance for tmpfs teardowns on unmount
(which typically have to tear-down a lot of buffer cache buffers).
Summary of changes:
sys/kern/vfs_bio.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/2d1b280fd7290751e4da3171a396ae301829790f
--
DragonFly BSD source repository
More information about the Commits
mailing list